Immunogenicity and safety of a pentavalent acellular pertussis combined vaccine including diphtheria, tetanus, inactivated poliovirus and conjugated Haemophilus Influenzae type b polysaccharide for primary vaccination at 2, 3, 4 or 3, 4, 5 months of age in infants in China.
Author(s): Li RC, Li FX, Li YP, Hou QM, Li CG, Li YN, Chen FS, Hu XZ, Su WB, Zhang SM, Fang HH, Ye Q, Zeng TD, Liu TX, Li XB, Huang YN, Deng ML, Zhang YP, Ortiz E
Affiliation(s): Guanxi Autonomous Region Center for Disease Prevention and Control, China.
Publication date & source: 2011-02-24, Vaccine., 29(10):1913-20. Epub 2011 Jan 8.
Publication type: Comparative Study; Randomized Controlled Trial; Research Support, Non-U.S. Gov't
The aim was to demonstrate the immunogenicity and safety of a DTaP-IPV//PRP-T combined vaccine (Pentaxim((R))) compared to individual vaccines in infants in the People's Republic of China. Infants (N=792) were randomly assigned to receive DTaP-IPV//PRP-T at 2, 3 and 4 months of age (Group A) or 3, 4 and 5 months of age (Group B), or DTaP (Wuhan Institute of Biological Products), PRP-T (Act-Hib((R))) and IPV (Imovax((R)) Polio) at 3, 4 and 5 months of age (Group C). Antibody titers were measured pre- and 1 month after the third vaccination; non-inferiority analyses were performed for seroprotection/seroconversion (SP/SC) rates. Safety was assessed 1 month after the primary series. SP/SC rates for the DTaP-IPV//PRP-T vaccine were high and non-inferior to the controls. Reactogenicity was low for each group and no hypotonic hyporesponsive episode or seizure was reported. In conclusion, the DTaP-IPV//PRP-T vaccine was highly immunogenic, non-inferior to the commercially available control vaccines and had a good safety profile for both primary administration schedules. Crown Copyright (c) 2011. Published by Elsevier Ltd. All rights reserved.